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Manufacturer-sourced values side by side. No performance equivalence or ranking is applied across different machine classes.

FeatureBobcat 630Skid steerBobcat 643Skid steer
TypeSkid steerSkid steer
Lift DesignVerticalRadial
Years Made1977-19801981-1986
Horsepower20.9 kW21.3 kW
Rating Operating Capacity (35% Tipping)326.6 kg326.6 kg
Rating Operating Capacity (50% Tipping)453.6 kg590 kg
Operating Weight1769.0 kg1905.1 kg
Tipping Load929.9 kg997.9 kg
Maximum Travel Speed10.6 km10.6 km
Pump Capacity36.0 LPM36.0 LPM
Relief Valve Pressure134.4 Bar131.0 Bar
Hydraulic Tank Capacity22.7 L13.2 L
Raise Lift Arms4.0 seconds3.6 seconds
Lower Lift Arms2.5 seconds2.9 seconds
Bucket Rollback1.6 seconds2.2 seconds
Bucket Dump2.2 seconds2.7 seconds
Engine ManufacturerWisconsinKubota
Engine ModelVH4DD1402
Engine TypeGasolineDiesel
No of Cylinders43
Rated Speed2500 RPM2500 RPM
Torque Speed1800 RPM—
Firing Order1-3-4-21-3-4-2
Gross Power20.9 kW23.9 kW
Displacement1765 cc1395 cc
Bore8.3 cm8.5 cm
Stroke8.3 cm8.2 cm
Peak Torque89 N∙m86 N∙m
Engine Oil Capacity3.8 L6.6 L
Fuel Tank Capacity37.9 L49.2 L
Cab Height191.9 cm192.5 cm
Bucket Hinge Pin Height275.9 cm276.9 cm
Width135.9 cm137.2 cm
Length with Bucket305.3 cm305.3 cm
Dump Height219.2 cm219.2 cm
Dump Reach55.0 cm55.4 cm
Ground Clearance18.0 cm19.1 cm
Dump Angle30 °37 °
Rollback Angle26 °26 °
Departure Angle27 °28 °
Front Tire7.00×15.67.00×15.6
Rear Tire7.00×15.67.00×15.6
Combustion Chamber—Spherical type
Compression Ratio—21.0
Coolant Capacity—10.4 L
Sourceheavyequipments.net archive (imported 2026-10)heavyequipments.net archive (imported 2026-10)
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Side-by-side specification comparisons generated from the manufacturer-sourced model files. · 7,051